Specifications include, but are not limited to: Qualified contractors to perform Catch Basin Cleaning Services. The City of Dover, NH has approximately 3,144 catch basins in its storm water drainage system, including schools and City-owned parking lots. The Community Services Department is responsible for the operation and maintenance of the storm water system. The catch basins are divided into two sections consisting of approximately 1,582 in the north end and 1,562 in the south end of the city. Some of the catch basins are inaccessible via truckmounted cleaning equipment, thus they are not included for bidding estimates. The City traditionally tackles roughly ½ of the total basins each year. Last year the City cleaned 1492 in the north end of the city. This year’s request for proposal will be for approximately 1,472 units in the SOUTH end of the city.